1) Cycloheptatriene ligand is used in ______ complex.
a) Alkenes b) Alkynes c) Allyl d) Trienyl
Ans. d) Trienyl
2) Arene complexes is prepared from _____.
a) metal halides b) metal carbonyls c) metal carbonyls halide d) All of above
Ans. d) All of above
3) Who was first time prepareed Arene ?
a) Wilkinson b) Fischer c) F.Hein d) none of these
Ans. c) F.Hein
4) Which complex is the like sandwitch structure ?
a) Ferrocene b) Nickelocene c) Cobaltocene d) All of above
Ans. d) All of above
5) Cyclobutadiene complex is _____ compound.
a) aromatic b) anti aromatic c) non aromatic d) none of these
Ans. b) anti aromatic
6) Which one is the correct length between platinum and chlorine in Zeise's salt?
a) 2.36 A⁰ b) 2.135 A⁰ c) 2.30 A⁰ d) 2.02 A⁰
Ans. c) 2.30 A⁰
7) Which metal is used to prepare homonuclear carbene complexes from Diazomethane ?
a) Pt b) Os c) Zr d) Cr
Ans. b) Os
8) In Fischer complexes nature of carbene carbon is _____.
a) Electrophilic b) Nucleophilic c) Both (a) and (b) d) none of these
Ans. a) Electrophilic
9) Which is the ∏ - bonded covalent organometallic compound ?
a) Ferrocene b) Uranocene c) Both (a) and (b) d) none of these
Ans. c) Both (a) and (b)
10) An organometallic bond is defined as the bond between _______.
a) a metal and a nonmetal b) a carbon and a metal
c) a carbon and a non metal d) a carbon and a metalloid
Ans. b) a carbon and a metal
11) Which one is the correct for Zeise's salt?
a) Pt2+ ion is present at the centre b) four corners of the square plane are occupied by chloride ion
c) Both (a) and (b) d) none of these
Ans. a) Pt2+ ion is present at the centre
12) Which one is the example of Dihapto ligands ?
a) Cyclobutadiene b) benzene c) Zeise's salt d) none of these
Ans. c) Zeise's salt
13) A Fischer-type carbene contains all but one of the following. Which is the odd one out ?
a) an M=C bond b) a nucleophilic carbene centre
c) Alow oxidation state metal centre d) none of these
Ans. a) an M=C bond
14) In alkenes the carbon atoms are connected to each other by a ______.
a) single bond b) double bond
c) triple bond d) not connected
Ans. b) double bond
15) Which among the following alkens is used in the manufacturing of plastics?
a) Butadiene b) 1, 2-Butadiene c) 1, 3-Butadiene d) 2-Butadiene
Ans. c) 1, 3-Butadiene
16) A Fischer-type carbene contains all but one of the following. Which is the odd one out ?
a) all complex following 18 electron rule is stable
b) Complexes following 18 electron rule are diamagnetic
c) 18 electron rule is not valid for complex having
d) complexes having VSE count less than 18 are strong reducing agents
Ans. b) Complexes following 18 electron rule are diamagnetic
17) Which of the following statement is true for shrock carbene ?
a) The carbene carbon is nucleophile in nature
b) If quite often does not obey 18 electron rule
c) The metal atom is relatively electron rule
d) All of above
Ans. d) All of above
18) Ferrocene is example of ______.
a) Tetrahapto lingnds b) Hexahapto ligands c) Pentahapto ligands d) Trihapto ligands
Ans. c) Pentahapto ligands
19) Which atom is used in organometallic compound as per its electronegativity ?
a) N(3.0)
b) O(3.5)
c) Be(1.5)
d) Br(2.8)
Ans. Be(1.5)
20) Which statement is not correct for ionic organometallic compounds ?
a) These are colorless
b) These are non volatile solids
c) These are soluble in hydrocarbon solvents
d) These are prepared in etherial solvents
Ans. c) These are soluble in hydrocarbon solvents
Post a Comment